﻿////////////////////////////////////////////////////////////////////////////////////////////////////
//
// VSCoverageToEmma - Visual Studio Coverage file to Emma converter
// Copyright (c) Kouji Matsui, All rights reserved.
//
// * Redistribution and use in source and binary forms, with or without modification,
//   are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
//   this list of conditions and the following disclaimer in the documentation
//   and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
// EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
////////////////////////////////////////////////////////////////////////////////////////////////////

using Microsoft.Win32;
using System;
using System.Diagnostics;

namespace VSCoverageToEmma.Converters
{
	internal static class InstallationDetector
	{
		public static string GetInstallDir(string versionString)
		{
			Debug.Assert(string.IsNullOrEmpty(versionString) == false);

			using (var registry = Registry.LocalMachine.OpenSubKey(
				(Architecture.Is64BitOperatingSystem == true) ?
					string.Format(@"SOFTWARE\Wow6432Node\Microsoft\VisualStudio\{0}", versionString) :
					string.Format(@"SOFTWARE\Microsoft\VisualStudio\{0}", versionString),
					false))
			{
				var installDir = (registry.GetValue("InstallDir", null) ?? string.Empty).ToString();
				if (installDir != string.Empty)
				{
					return installDir;
				}
			}

			return null;
		}
	}
}
